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Vanderbilt Pathology Laboratory Services

Test Directory



C REACTIVE PROTEIN BLOOD (CRP)

Department: Chemistry
Test Synonym(s): CRP, Inflammatory CRP
CPT Codes: 86140
Methodology: Particle Enhanced Turbidimetric
Reference Range: 0-14 days: 0.3-6.1 mg/L; 15 days - <15 years: 0.1-1 mg/L; 15 years - <19 years: 0.1-1.7 mg/L; 19 years-150 years: 0-5 mg/L
Tube Type: Light green PST (Lithium Heparin with gel) tube - 4.5 mL
Specimen: Plasma
Pediatric Requirements: 2 light green top microtainers
Volume: 2 mL plasma
Minimum Volume: 0.5 mL plasma
Temperature: Separate within one hour and store at 2-8C until delivery
Stability: < 3 days at 4C; 6 months at -20C
Reasons for Rejection: Hemolysis, improper collection
Days Performed: Daily
Times Performed: Continuous
TAT: STAT: 1 hour; ROUTINE: 2 hours after receiving in lab
Significance: Clinical action level >10 mg/L, reference: Benitz et al. Pediatrics 1998:102(4); e41

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